Display device

ABSTRACT

A display device includes: a first base layer; a circuit element layer on the first base layer; a pixel definition layer on the circuit element layer and comprising a plurality of light-emitting openings which are spaced apart from each other and define a plurality of light-emitting regions; a second base layer spaced apart from and facing the first base layer; a light-shielding layer on the second base layer and comprising a plurality of openings respectively overlapping the light-emitting regions, wherein on a plane of the first base layer, shapes of first to third openings along one direction among the openings are different from each other.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a divisional of U.S. patent application Ser. No.16/532,279, filed Aug. 5, 2019, which claims priority to and the benefitof Korean Patent Application No. 10-2018-0118903, filed Oct. 5, 2018,the entire content of both of which is incorporated herein by reference.

BACKGROUND

Aspects of some example embodiments of the present disclosure hereinrelate to a display device.

Display devices include, for example, liquid crystal display devices,plasma display devices, organic light-emitting display devices, etc.Among these, liquid crystal display devices are manufactured by using asemiconductor process and the manufacturing process may make itdifficult to manufacture liquid crystal display devices with relativelylarge screens. In addition, due to the use of backlight units, liquidcrystal display devices have relatively large power consumption. Inaddition, liquid crystal display devices may have relatively high levelsof light loss due to optical components such as polarization filters,prism sheets, and diffusion plates, and liquid crystal display devicesmay have relatively smal viewing angles.

In comparison, organic light-emitting display devices have a selflight-emitting element that emits light by itself. Additionally, organiclight-emitting display devices have a relatively fast response speed,and can be manufactured in a lightweight, thin structure. In addition,organic light-emitting display devices may have a relatively highlight-emitting efficiency and brightness, and a relatively large viewingangle.

The above information disclosed in this Background section is only forenhancement of understanding of the background of the invention andtherefore it may contain information that does not constitute prior art.

SUMMARY

Aspects of some example embodiments of the present disclosure hereinrelate to a display device, and for example, to a display device havingimproved visibility.

Aspects of some example embodiments of the present disclosure include adisplay device having relatively improved visibility and the capabilityof reducing light leaks.

Some example embodiments of the inventive concept include a displaydevice including: a first base layer; a circuit element layer on thefirst base layer; a pixel definition layer on the circuit element layerand including a plurality of light-emitting openings which are spacedapart from each other, and are configured to define a plurality oflight-emitting regions; a second base layer spaced apart from and facingthe first base layer; a light-shielding layer on the second base layerand including a plurality of openings respectively overlapping thelight-emitting regions, wherein on a plane of the first base layer,shapes of first to third openings continued in one direction among theopenings are different from each other.

According to some example embodiments, on the plane, the area of each ofthe light-emitting regions may be smaller than the area of any one amongthe openings.

According to some example embodiments, the second opening may be betweenthe first opening and the third opening, and on the plane, the area ofthe second opening may be larger than the area of each of the firstopening and the third opening.

According to some example embodiments, on the plane, the second openingmay be provided with a first opening region and a second opening regionwhich are line symmetrical according to a central axis and respectivelyhave equilateral trapezoidal shapes, and the first opening and the thirdopening may respectively be provided with a third opening region and afourth opening region which are line symmetrical according to a centralaxis and respectively have parallelogram shapes.

According to some example embodiments, on the plane, the second openingmay be provided with an opening region having a rectangular shape, andthe first opening and the third opening may respectively be providedwith a first opening region and a second opening region which are linesymmetrical according to central axes and respectively have trapezoidalshapes.

According to some example embodiments, on the plane, the first openingand the third opening may be line symmetrical to each other.

According to some example embodiments, the second opening may be betweenthe first opening and the third opening which are symmetrical to eachother, and on the plane, the area of the second opening may be largerthan the area of each of the first opening and the third opening.

According to some example embodiments, on the plane, the second openingmay be provided with an opening region having a rectangular shape, andeach of the first opening and the third opening may be provided with afirst opening region and a second opening region which are linesymmetrical according to central axes and respectively have trapezoidalshapes.

According to some example embodiments, the pixel definition layer mayfurther include through holes overlapping between the first to thirdopenings and fourth to sixth openings continuing in the one direction.

According to some example embodiments, the display device furthercomprises a plurality of first electrodes on the circuit element layerand respectively having portions exposed by the light-emitting openings,a light-emitting layer on the first electrodes, a second electrode onthe pixel definition layer and covering the light-emitting layer. And,the second electrode may be electrically connected to the circuitelement layer via the through hole overlapping the light-shieldinglayer.

According to some example embodiments, the display device furthercomprises a plurality of first electrodes on the circuit element layerand respectively having portions exposed by the light-emitting openings,a light-emitting layer on the first electrodes, a second electrode onthe pixel definition layer and covering the light-emitting layer. And,the circuit element layer may include: a plurality of transistors on thefirst base layer and electrically connected to the light-emitting layer;and a dummy transistor on the first base layer and electricallyconnected to the second electrode via the through hole.

According to some example embodiments, shapes of the first to thirdopenings may respectively correspond to shapes of the fourth to sixthopenings.

According to some example embodiments of the inventive concept, adisplay device includes: a first base layer; a circuit element layer onthe first base layer; a display element layer electrically connected tothe circuit element layer and including a plurality of light-emittingregions; a second base layer spaced apart from and facing the first baselayer; and a light-shielding layer on the second base layer andincluding a plurality of openings respectively overlapping thelight-emitting regions, wherein on a plane of the first base layer,shapes of first to third openings continuing in one direction among theplurality openings are different from each other.

According to some example embodiments, the light-emitting regions mayinclude: a first light-emitting group and a second light-emitting groupwhich are arranged along a first row and are spaced apart from eachother with a first through hole passing through a portion of each of thedisplay element layer and the circuit element layer therebetween; and athird light-emitting group and a fourth light-emitting group which arearranged along a second row and are spaced apart from each other with asecond through hole passing through a portion of each of the displayelement layer and the circuit element layer therebetween.

According to some example embodiments, each of the first to fourthlight-emitting groups may include a plurality of sub light-emittingregions, the sub light-emitting region, of the first light-emittinggroup, most adjacent to the second light-emitting group may emit a firstcolor light, the sub light-emitting region, of the second light-emittinggroup, most adjacent to the first light-emitting group may emit a secondcolor light, the sub light-emitting region, of the third light-emittinggroup, most adjacent to the fourth light-emitting group may emit thesecond color light, and the sub light-emitting region, of the fourthlight-emitting group, most adjacent to the third light-emitting groupmay emit a first color light.

According to some example embodiments, the light-emitting regions mayfurther include a fifth light-emitting group and a sixth light-emittinggroup which are arranged along a third row and spaced apart from eachother with a third through hole passing through a portion of each of thedisplay element layer and the circuit element layer.

According to some example embodiments, each of the first to fourthlight-emitting groups may include a plurality of sub light-emittingregion, the sub light-emitting regions, of the first light-emittinggroup, most adjacent to the second light-emitting group may emit a firstcolor light, the sub light-emitting region, of the second light-emittinggroup, most adjacent to the first light-emitting group may emit a secondcolor light, the sub light-emitting region, of the third light-emittinggroup, most adjacent to the fourth light-emitting group may emit a thirdcolor light, the sub light-emitting region, of the fourth light-emittinggroup, most adjacent to the third light-emitting group may emit a firstcolor light, the sub light-emitting region, of the fifth light-emittinggroup, most adjacent to the sixth light-emitting group may emit thefirst color light, and the sub light-emitting region, of the sixthlight-emitting group, most adjacent to the fifth light-emitting groupmay emit the third color light.

According to some example embodiments, the circuit element layer mayinclude: a plurality of transistors on the first base layer andelectrically connected to the respective display element layers; and afirst dummy transistor and a second dummy transistor which are on thefirst base layer and electrically connected to the respective displayelement layers through the first and second through holes.

According to some example embodiments, the light-emitting regions mayinclude: a first light-emitting group and a second light-emitting groupwhich are arranged along a first row and are spaced apart from eachother with a first through hole passing through a portion of each of thedisplay element layer and the circuit element layer therebetween; athird light-emitting group and a fourth light-emitting group which arearranged along a second row; and a fifth light-emitting group and asixth light-emitting group which are arranged along a third row andspaced apart from each other with a second through hole passing througha portion of each of the display element layer and the circuit elementlayer therebetween.

According to some example embodiments of the inventive concept, adisplay device includes: a first base layer; a circuit element layer onthe first base layer; a display element layer electrically connected tothe circuit element layer and including a plurality of light-emittingregions; a second base layer spaced apart from and facing the first baselayer; and a light-shielding layer on the second base layer andincluding a plurality of openings respectively overlapping thelight-emitting regions, wherein the light-emitting regions include: afirst light-emitting group and a second light-emitting group which arearranged along a first row and are spaced apart from each other with afirst through hole passing through a portion of each of the displayelement layer and the circuit element layer therebetween; and a thirdlight-emitting group and a fourth light-emitting group which arearranged along a second row and are spaced apart from each other with asecond through hole passing through a portion of each of the displayelement layer and the circuit element layer therebetween.

BRIEF DESCRIPTION OF THE FIGURES

The accompanying drawings are included to provide a furtherunderstanding of the inventive concept, and are incorporated in andconstitute a part of this specification. The drawings illustrate aspectsof some example embodiments of the inventive concept and, together withthe description, serve to explain principles of the inventive concept.In the drawings:

FIG. 1 is a perspective view of a display device according to someexample embodiments of the inventive concept;

FIG. 2 is a block diagram of a display device according to some exampleembodiments of the inventive concept;

FIG. 3 is a cross-sectional view of a display module according to someexample embodiments of the inventive concept;

FIG. 4A is a plan view of a display panel according to some exampleembodiments of the inventive concept;

FIG. 4B is an equivalent circuit diagram of a pixel according to someexample embodiments of the inventive concept;

FIG. 4C is a partial cross-sectional view of a display panel accordingto some example embodiments of the inventive concept;

FIGS. 5 and 6 are plan views of pixels according to some exampleembodiments of the inventive concept;

FIG. 7 is a cross-sectional view of a display panel taken along the lineI-I′ shown in FIG. 5;

FIG. 8A is a plan view of pixels according to some example embodimentsof the inventive concept;

FIG. 8B is a plan view of pixels according to some example embodimentsof the inventive concept;

FIG. 8C is a plan view of pixels according to some example embodimentsof the inventive concept;

FIG. 9 is a plan view illustrating structures of light-emitting regionsincluded in pixels according to some example embodiments of theinventive concept;

FIG. 10 is a plan view illustrating structures of light-emitting regionsincluded in pixels according to some example embodiments of theinventive concept; and

FIG. 11 is a plan view illustrating structures of light-emitting regionsincluded in pixels according to some example embodiments of theinventive concept.

DETAILED DESCRIPTION

In this specification, it will be understood that when an element (or aregion, a layer, portion, etc.) is referred to as “being on”, “connectedto” or “coupled to” another element or layer, it can be directly on,connected or coupled to the other element or a third intervening elementmay be present therebetween.

Like reference numerals refer to like elements. Also, in the figures,the thicknesses, the ratios and the dimensions of elements areexaggerated for effective illustration of technological contents.

As, used herein, the term “and/or” includes all of one or morecombinations that can be defined by associated items.

It will be understood that although the terms “first” and “second” maybe used herein to describe various elements, these elements should notbe limited by these terms. The terms are only used to distinguish oneelement from other elements. For example, a first element may bereferred to as a second element and the second element may similarly bereferred to as the first element without departing from the scope of thepresent disclosure. The terms of a singular form may include pluralforms unless obviously referred to the contrary in context.

In addition, terms such as “below”, “lower”, “above”, and “upper” may beused to describe the relationship between features illustrated in thefigures. The terms have relative concept, and are described on the basisof the orientation illustrated in the figures.

Unless otherwise defined, all terns (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this invention belongs. It will befurther understood that terms, such as those defined in commonly useddictionaries, should be interpreted as having a meaning that isconsistent with their meaning in the context of the relevant art andwill not be interpreted in an idealized or overly formal sense unless sodefined herein.

It will be further understood that the term “include” or “have”, whenused in this specification, specifies the presence of stated features,numbers, steps, operations, elements, components or combinationsthereof, but do not preclude the presence or addition of one or moreother features, integers, steps, operations, elements, components,and/or combinations thereof.

Hereinafter, aspects of some example embodiments of the inventiveconcept will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a display device according to someexample embodiments of the inventive concept. FIG. 2 is a block diagramof a display device according to some example embodiments of theinventive concept.

Referring to FIG. 1, a display device DD may display an image through adisplay region DA. FIG. 1 illustrates an example of a display region DAprovided on a surface defined by a first direction DR1 and a seconddirection DR2 crossing the first direction DR1. However, according tosome example embodiments of the inventive concept, the display region ofthe display device may be provided on a curved surface. In addition,although not shown in FIG. 1, according to some example embodiments, thedisplay device DD may further include a non-display region adjacent tothe display region DA, and the non-display region may be a region fromwhich no image is viewed.

The non-display region may be positioned adjacent to one region of thedisplay region DA or may surround the display region DA.

The thickness direction of the display device DD is indicated by a thirddirection DR3. The directions indicated by the first to third directionsDR1, DR2, and DR3 are a relative concept and may be converted into otherdirections. In this specification, the wording “when viewed in a planeor on a plane” may mean a case of viewing in the third direction DR3. Inaddition, the “thickness direction” may be the third direction DR3.

FIG.1 illustrates an example embodiment in which the display device DDis a television. However, embodiments are not limited thereto, and thedisplay device DD may be used for a large-sized electronic apparatussuch as a monitor, or external advertising board, and a small andmedium-sized electronic apparatus, such as a personal computer, a laptopcomputer, a personal digital terminal, a car navigation unit, a gamemachine, a smartphone, a tablet, and a camera. In addition, these areonly presented as embodiments, and may be, of course, applied to otherelectronic devices without departing from the inventive concept.

Referring to FIG. 2, a display device DD may include a display panel DP,a signal control circuit TC, a data drive circuit DDV, and a scan drivecircuit GDV. Each of the signal control circuit TC, the data drivecircuit DDV, and the scan drive circuit GDV may include a plurality ofcircuits.

The display panel DP may include a plurality of data lines DL1-DLm, aplurality of scan lines SL1-SLn, and a plurality of pixels PX.

The plurality of data lines DL1-DLm may extend in a second direction DR2and be arranged in a first direction DR1 crossing the second directionDR2. The plurality of scan lines SL1-SLn may extend in the firstdirection DR1 and be arranged in the second direction DR2.

Each of the pixels PX may include a light emitting element and a pixelcircuit electrically connected to the light-emitting element. The pixelcircuit may include a plurality of transistors. A first power supplyvoltage ELVDD and a second power supply voltage ELVSS may be provided toeach of the pixels PX.

The pixels PX may be positioned with a certain rule on a plane of thedisplay panel DP. Each of the pixels PX may display one among primarycolors or one among mixed colors. The primary colors may include red,green and blue, and the mixed colors may include various colors such asyellow, cyan, magenta, and white. However, the colors displayed by thepixels PX are not limited thereto.

The signal control circuit TC receives image data RGB provided from theoutside. The signal control circuit TC converts the image data RGB tomeet the operation of the display panel DP, generates converted imagedata R′G′B′, and outputs the converted image data R′G′B′ to the datadrive circuit DDV.

In addition, the signal control circuit TC may receive a control signalCS provided from the outside. The control signal CS may include avertical synchronization signal, a horizontal synchronization signal, amain clock signal, and a data enable signal, and the like. The signalcontrol circuit TC provides a first control signal CONT1 to the datadrive circuit DDV and provides a second control signal CONT2 to the scandrive circuit GDV. The first control signal CONT1 is a signal forcontrolling the data drive circuit DDV, and the second control signalCONT2 is a signal for controlling the scan drive circuit GDV.

The data drive circuit DDV may respond to the first control signal CONT1received from the signal control circuit TC and thereby drive theplurality of data lines DL1-DLm. The data drive circuit DDV may beimplemented as an independent integrated circuit, and electricallyconnected to one side of the display panel DP or directly mounted on thedisplay panel DP. In addition, the data drive circuit DDV may beimplemented in a single chip or include a plurality of chips.

The scan drive circuit GDV may be integrated in a region (e.g., apredetermined region) of the display panel DP. For example, the scandrive circuit GDV may include a plurality of thin film transistors whichare formed through the same process as the pixel circuits of the pixelsPX, for example, a low temperature polycrystalline silicon (LTPS)process or a low temperature polycrystalline oxide (LTPO) process. Inaddition, the scan drive circuit GDV may be implemented as anindependent integrated circuit chip and electrically connected to oneside of the display panel DP.

FIG. 3 is a cross-sectional view of a display module according to someexample embodiments of the inventive concept. FIG. 4A is a plan view ofa display panel according to some example embodiments of the inventiveconcept. FIG. 4B is an equivalent circuit diagram of a pixel accordingto some example embodiments of the inventive concept. FIG. 4C is apartial cross-sectional view of a display panel according to someexample embodiments of the inventive concept.

Referring to FIG. 3, a display module DM includes a display panel DP andan input detection unit TS (or a touch detection unit). According tosome example embodiments of the inventive concept, the display module DMis described to include the input detection unit TS, but according tosome example embodiments, the input detection unit TS may not beincluded.

The display panel DP may be, but is not limited to, an organiclight-emitting display panel. For example, the display panel DP may bean organic light-emitting display panel or a quantum dot light-emittingdisplay panel. In the organic light-emitting display panel, alight-emitting layer contains an organic light-emitting material. In thequantum dot light-emitting display panel, a light-emitting layercontains quantum dots and quantum rods. Hereinafter the display panel DPof the inventive concept will be described with respect to an organiclight-emitting display panel for convenience of description and brevity,but embodiments are not limited thereto, as described above.

The display panel DP includes a first base layer SUB1, and a circuitelement layer DP-CL, a display element layer DP_OLED, and an insulatinglayer TFL which are positioned on the first base layer SUB1. The inputdetection unit TS may directly be positioned on the insulating layerTFL. In this specification, the wording “feature A is directly onfeature B” means that an adhesive layer is not located between thefeature A and the feature B.

The first base layer SUB1 may include at least one plastic film. Thefirst base layer SUB1 is a flexible substrate and may include a plasticsubstrate, a glass substrate, a metal substrate, an organic/inorganiccomposite material substrate, or the like. The display region DAdescribed with reference to FIG. 1 may correspond to a display regionDM-DA defined on the first base layer SUB1. In addition, although notshown in FIG. 1, the display device DD may include a non-display regionadjacent to the display region DA. As illustrated in FIG. 3, anon-display region DM-NDA is defined on the first base layer SUB1, andthe non-display region DM-NDA may be adjacent to one side of the displayregion DM-DA or surround the display region DM-DA. According to someexample embodiments, the non-display region DM-NDA may also be omitted.

The circuit element layer DP-CL may include at least one intermediateinsulating layer and a circuit element. The intermediate insulatinglayer may include at least one intermediate inorganic film and at leastone intermediate organic film. The circuit element may include signallines, a driving circuit for pixels, and the like.

The display element layer DP-OLED includes a plurality of organiclight-emitting diodes. The display element layer DP-OLED may furtherinclude an organic film such as a pixel definition layer.

The insulating layer TFL seals the display element layer DP-OLED. Forexample, the insulating layer TFL may be a thin film encapsulationlayer. The insulating layer TFL protects the display element layerDP-OLED from foreign substances such as water, oxygen, or dustparticles. Meanwhile, as illustrated in FIG. 3, the insulating layer TFLis illustrated to overlap each of the display region DM-DA and thenon-display region DM-NDA, but the embodiment of the inventive conceptis not limited thereto, and the insulating layer may not overlap thenon-display region DM-NDA.

Referring to FIG. 4A, a display panel DP includes a display region DAand a non-display region NDA. The display region DA of the display panelDP may correspond to the display region DA of the display device DDillustrated in FIG. 1.

The display panel DP includes a scan drive circuit GDV, a plurality ofsignal lines SGL, a plurality of pixels PX, and a plurality of drivepads PD. A region in which the plurality of pixels PX are located isdefined as the display region DA. The scam drive circuit GDV, theplurality of signal lines SGL, and the pixel drive circuit may beincluded in the circuit element layer DP-CL shown in FIG. 3.

The scan drive circuit GDV generates a plurality of scan signals andsequentially outputs the plurality of scan signals to the plurality ofscan lines SL1-SLn (see FIG. 2). The scan drive circuit GDV may furtheroutput another different control signal to the drive circuits of thepixels PX.

The plurality of signal lines SGL include scan lines SL, data lines DL,a power line PL and a control signal line CSL. The scan lines SL and thedata lines DL may correspond to the scan lines SL1-SLn and the datalines DL1 to DLm which are illustrated in FIG. 2.

The scan lines SL are respectively connected to the corresponding pixelsamong the plurality of pixels PX, and the data lines DL are respectivelyconnected to the corresponding pixels PX among the plurality of pixelsPX. The power line PL is connected to the plurality of pixels PX. Inaddition, the scan drive circuit GDV to which the scan lines SL areconnected may be located in the non-display region NDA. The controlsignal line CSL may provide control signals to the scan drive circuitGDV.

Some of the scan lines SL, the data lines DL, the power line PL, and thecontrol signal line CSL are located on the same layer and some arelocated on other layers. When the signal lines located on any one layeramong the scan lines SL, the data lines DL, the power line PL, and thecontrol signal line CSL are defined as a first signal line, the signallines located on another layer may be defined as a second signal line.The signal lines located on still another layer may be defined as athird signal line.

The display panel DP may further include a plurality of drive pads PDelectrically connected to the data lines DL, the power line PL, and thecontrol signal line CSL. The drive pads PD may overlap the non-displayregion NDA.

FIG. 4B illustrates an example of the pixels PX connected to any onescan line SL, any one data line DL, and the power line PL. Theconfiguration of the pixel PX is not limited thereto, but may bemodified according to various embodiments.

According to some example embodiments of the inventive concept, thepixel PX includes an organic light-emitting element ED, a firstelectrode AE, a second electrode CE, and a pixel circuit PXC. The pixelPX includes an organic light-emitting element ED as a display element.

The organic light-emitting element ED, the first electrode AE and thesecond electrode CE may be included in the display element layer DP-OLEDshown in FIG. 3.

The organic light-emitting element ED may be a front surfacelight-emitting type diode or a rear surface light-emitting type diode.

The pixel circuit PXC is a circuit unit for driving the organiclight-emitting element ED, and includes a first transistor T1 (orswitching transistor), a second transistor T2 (or drive transistor), anda capacitor Cap. The pixel circuit PXC may be included in the circuitelement layer DP-CL shown in FIG. 3.

The organic light-emitting element ED generates light in response to anelectrical signal provided from the first and second transistors T1 andT2.

The first transistor T1 outputs a data signal applied to the data lineDL in response to a scan signal applied to the scan line SL. Thecapacitor Cap charges a voltage corresponding to the data signalreceived from the first transistor T1. A first power supply voltageELVDD is provided to the first electrode AE via the second transistorT2, and the second power supply voltage ELVSS is provided to the secondelectrode CE. The second power supply voltage ELVSS may be a voltagelower than the first power supply voltage ELVDD.

The second transistor T2 is electrically connected to the organiclight-emitting element ED via the first electrode AE. The secondtransistor T2 controls a drive current ID flowing through the organiclight-emitting element ED corresponding to an amount of charges storedin the capacitor Cap. The organic light-emitting element ED emits lightduring a turn-on period of the second transistor T2.

FIG. 4C illustrates a partial cross-section of the display panel DPcorresponding to the equivalent circuit shown in FIG. 4B. On the firstbase layer SUB1, the circuit element layer DP-CL, the display elementlayer DP-OLED, the insulating layer TFL, and the second base layer SUB2are sequentially located.

The circuit element layer DP-CL includes at least one insulating layerand a circuit element. The circuit element includes a signal line, adrive circuit for pixel, and the like. The circuit element layer DP-CLmay be formed through: a process for forming an insulating layer, asemiconductor layer and a conductive layer by coating, deposition, etc.;and a process for patterning the insulating layer, the semiconductorlayer and the conductive layer by a photolithography process.

The circuit element layer DP-CL may include a buffer film BFL, a firstintermediate inorganic film 10, and a second intermediate inorganic film20, which are inorganic films, and an intermediate organic film 30 whichis an organic film. The buffer film BFL may include a plurality oflaminated inorganic films. FIG. 4C illustrates an example arrangementrelationship of a first semiconductor pattern OSP1, a secondsemiconductor pattern OSP2, a first control electrode GE1, a secondcontrol electrode GE2, a first input electrode DE1, a first outputelectrode SE1, a second input electrode DE2, and the second outputelectrode SE2 which constitute a first transistor T1 and a secondtransistor T2. Examples of the first to fourth through holes CH1, CH2,CH3, and CH4 are also illustrated.

The display element layer DP-OLED may include an organic light-emittingelement ED. The display element layer DP-OLED includes a pixel definingfilm PDL. For example, the pixel defining film PDL may be an organiclayer.

The first electrode AE is located on the intermediate organic film 30.The first electrode AE is connected to the second output electrode SE2through a fifth through hole CH5 passing through the intermediateorganic film 30. A light-emitting opening OM is defined in the pixeldefining film PDL. The light-emitting opening OM of the pixel definingfilm PDL exposes at least a portion of the first electrode AE.

According to some example embodiments, a spacer overlapping a portion ofthe pixel defining film PDL may be located on the upper surface of thepixel defining film PDL. The spacer may have a shape integrated with thepixel defining film PDL or an insulating structure formed by anadditional process.

According to some example embodiments of the inventive concept, thepixel defining film PDL may include the plurality of light-emittingopenings OM which defines a plurality of light-emitting regions EA. Asillustrated in FIG. 4B, the display panel DP may include alight-emitting region EA and a non-light-emitting region NEA adjacent tothe light-emitting region EA. The non-light-emitting region NEA maysurround the light-emitting region EA. In this embodiment of theinventive concept, the light-emitting region EA is defined to correspondto a portion of the first electrode AE exposed by the light-emittingopening OM.

A positive hole control layer HCL may be commonly located on the lightemitting region EA and the non-light-emitting region NEA. The positivehole control layer HCL includes a positive hole transportation layer andmay further include a positive hole injection layer. A light-emittinglayer EML is located on the positive hole control layer HCL. Alight-emitting layer EML may be an organic light-emitting layer. Thelight-emitting layer EML may be located on the region corresponding tothe light-emitting opening OM. That is, the light-emitting layer EML maybe formed so as to be separated to each of the pixels. However, theembodiments of the inventive concept are not limited thereto, and thelight-emitting layer EML may be provided in an integral shape whileoverlapping the pixels. The light-emitting layer EML may include anorganic material and/or an inorganic material. The light-emitting layerEML may generate a colored light (e.g., a predetermined colored light).

An electron control layer ECL is located on the light-emitting layerEML. The electron control layer ECL includes an electron transportationlayer and may further include an electron injection layer. The positivehole control layer HCL and the electron control layer ECL may becommonly formed on a plurality of pixels by using an open mask. Thesecond electrode CE is located on the electron control layer ECL.

The second electrode CE has an integrated shape and is commonly locatedon the electron control layer ECL included in each of the plurality ofpixels.

The insulating layer TFL is located on the second electrode CE. Theinsulating layer TFL may be provided as a single encapsulation layer ora plurality of thin films.

The second base layer SUB2 may be located on the insulating layer TFL.The second base layer SUB2 may be spaced apart from the first base layerSUB1 and face the first base layer in a third direction DR3.

A light-shielding layer BM may be located on the second base layer SUB2.FIG. 4C illustrates that the light-shielding layer BM is located on thelower surface of the second base layer SUB2 closer to the displayelement layer DP-OLED, but the embodiments of the inventive concept arenot limited thereto, and the light-shielding layer BM may also belocated on the upper surface of the second base layer SUB2.

In addition, the light-shielding layer BM may include an opening OEA anda portion of the second base layer SUB2 may be exposed by the openingOEA.

Actually, the light-shielding layer BM may include a plurality ofopenings OEA. According to some example embodiments of the inventiveconcept, the area of the opening OEA may be larger than the area of thelight-emitting region EA. Accordingly, the opening OEA may overlap eachof the light emitting region EA and the non-light-emitting region NEA.In addition, because the area of the opening OEA is larger than that ofthe light-emitting region EA, a wide viewing angle may be ensured. Thelight output through the light-emitting region EA may be transmittedthrough the opening OEA.

Referring again to FIG. 3, the input detection unit TS may be located onthe insulating layer TFL. The input detection unit TS may be locateddirectly on the insulating layer or may be connected to the insulatinglayer TFL through an adhesive layer in another embodiment. The inputdetection unit TS may include a single-layer or a multilayeredconductive layer. In addition, the input detection unit TS may include asingle-layer or a multilayered insulating layer.

The input detection unit TS may detect an input applied from theoutside, for example, through a capacitive method. The input appliedfrom the outside may be provided in various forms. For example, theexternal input includes various types of external inputs, such as aportion of the body of a user, a stylus pen, light, heat, or pressure.In addition, not only the input made by a contact with a portion of thebody such as a hand of a user, but also a touch (for example, hovering)which approaches or is adjacent to a space may be one type of the input.

The operation type of the input detection unit TS is not particularlylimited, and the input detection unit TS may also detect an externalinput through an electromagnetic induction method or a pressuredetection method. Meanwhile, according to some example embodiments ofthe inventive concept, the input detection unit TS may be separatelymanufactured and attached to the display panel DP through an adhesivelayer, or the input detection method TS may be omitted.

FIGS. 5 and 6 are plan views of pixels according to some exampleembodiments of the inventive concept. FIG. 7 is a cross-sectional viewof a display panel taken along the line I-I′ shown in FIG. 5.

Each of the pixels PX shown above in FIG. 2 may include a plurality offirst to third sub pixels which output colors different from each other.Through FIGS. 5 and 6, illustrated are a first pixel PXa and a secondpixel PXb which are arranged in the same row and continue in a firstdirection DR1.

The first pixel PXa includes first to third sub pixels PXa1, PXa2, andPXa3 which are continued in the first direction DR1, and the secondpixel PXb includes first to third sub pixels PXb1, PXb2, and PXb3 whichare continued in the first direction DR1.

The first sub pixel PXa1 includes a first light-emitting region EAa1 anda first opening OEAa1 surrounding the first light-emitting region EAa1.The first sub pixel PXa1 outputs a first color light through the firstlight-emitting region EAa1, and the output first color light may betransmitted to the outside through the first opening OEAa1.

The second sub pixel PXa2 includes a second light-emitting region EAa2and a second opening OEAa2 surrounding the second light-emitting regionEAa2. The second sub pixel PXa2 outputs a second color light through thesecond light-emitting region EAa2, and the output second color light maybe transmitted to the outside through the second opening OEAa2.

The third sub pixel PXa3 includes a third light-emitting region EAa3 anda third opening OEAa3 surrounding the third light-emitting region EAa3.The third sub pixel PXa3 outputs a third color light through the thirdlight-emitting region EAa3, and the output third color light may betransmitted to the outside through the third opening OEAa3. The first tothird colors are provided in different colors from each other.

The above-mentioned first to third light-emitting regions EAa1 to EAa3are defined by the pixel defining film PDL, and the first to thirdopenings OEAa1 to OEAa3 are defined by the light-shielding layer BM. Inaddition, on a plane, the first to third openings OEAa1 to OEAa3 arespaced apart from each other, and the light-shielding layer BM may belocated between the spaced-apart portions.

The structures of the first to third sub pixels PXb1, PXb2, and PXb3which are included in the second pixel PXb are substantially the same asthose of the first to third sub pixels PXa1, PXa2, and PXa3 which areincluded in the first pixel PXa, and thus, some repetitive detaileddescriptions thereof will be omitted.

That is, the first sub pixel PXb1 includes a first light-emitting regionEAb1 which outputs the first color light and a fourth opening OEAb1surrounding the first light-emitting region EAb1 on the plane. Thesecond sub pixel PXb2 includes a second light-emitting region EAb2 whichoutputs the second color light and a fifth opening OEAb2 surrounding thesecond light-emitting region EAb2 on the plane. The third sub pixel PXb3includes a third light-emitting region EAb3 which outputs the thirdcolor light and a sixth opening OEAb3 surrounding the thirdlight-emitting region EAb3 on the plane.

Similarly, the first to third light-emitting regions EAb1 to EAb3 aredefined by the pixel defining film PDL, and the fourth to sixth openingsOEAb1 to OEAb3 are defined by the light-shielding layer BM. In addition,on the plane, the fourth to sixth openings OEAb1 to OEAb3 are spacedapart from each other, and the light-emitting layer BM may be locatedbetween the spaced-apart portions.

Meanwhile, the second electrode CE described with reference to FIG. 4Creceives the second power supply voltage EVLSS and transmits the voltageto the organic light-emitting element ED. For example, the secondelectrode according to some example embodiments of the inventive conceptis provided as a single integrated electrode and provided to have asmall thickness to improve transmittance thereof. However, as thethickness of the second electrode CE decreases, surface resistance maybe increased. When the surface resistance of the second electrode CE isincreased, current attenuation of the second power supply voltagesupplied to the second electrode CE may occur.

According to some example embodiments of the inventive concept, athrough hole CHL may be located between two pixels which are arranged onthe same row, that is, neighbor in the first direction DR1. Asillustrated in FIG. 5, the through hole CHL may be located between thetwo neighboring pixels, that is, between the first pixel PXa and thesecond pixel PXb.

For example, the through hole CHL may pass through a portion of thedisplay element layer OP-OLED and the circuit element layer DP-CL whichare illustrated in FIG. 4C. The second electrode CE may be electricallyconnected to the circuit element layer DP-CL through the through holeCHL. As the second electrode CE is electrically connected to the circuitelement layer DP-CL through the through hole CHL, the level of theresistance of the second electrode may be lowered. Consequently, thecurrent characteristic of the second electrode may be improved. Theconnection structure of the second electrode and the circuit elementlayer DP-CL will be described in more detail with reference to FIG. 7.

On a plane, the light-shielding layer BM may surround the openingsincluded in the first pixel PXa and the second pixel PXb. The throughhole CHL may be located between the third opening OEAa3 of the third subpixel PXa3 and the fourth opening OEAb1 of the first sub pixel PXb1.

In addition, in order to form the through hole CHL, a separation spaceis generated between the two openings, that is, the third opening OEAa3and the fourth opening OEAb1. Accordingly, compared to the case in whichthe through hole CHL is not defined between the two openings, that is,the third opening OEAa3 and the fourth opening OEAb1, the area of thelight-shielding layer BM located between the two openings, that is, thethird opening OEAa3 and the fourth opening OEAb1 may be increased.

According to some example embodiments of the inventive concept, thefirst to third openings OEAa1 to OEAa3 or the fourth to sixth openingsOEAb1 to OEAb3 may be provided in shapes different from each other.Hereinafter with reference to FIG. 6, the shapes of the first to thirdopenings OEAa1 to OEAa3 will be described, and the fourth to sixthopenings OEAb1 to OEAb3 may be provided in the same shape as these.

For example, referring to FIG. 6, on a plane, the area of the secondopening OEAa2 may be larger than the area of each of the first openingOEAa1 and the third opening OEAa3. The first opening OEAa1 and the thirdopening OEAa3 may be line symmetric.

According to some example embodiments of the inventive concept, thesecond opening OEAa2 is line symmetrical according to a central axis AX,and may be provided with a first opening region OP2 a and a secondopening region OP2 b which respectively have equilateral trapezoidalshapes. The central axis AX between the first opening region OP2 a andthe second opening region OP2 b may be parallel to the first directionDR1.

The first opening OEAa1 is line symmetrical according to the centralaxis AX, and may be provided with a first opening region OP1 a and asecond opening region OP1 b which respectively have parallelogramshapes. The third opening OEAa3 is line symmetrical according to thecentral axis AX, and may be provided with a first opening region OP3 aand a second opening region OP3 b which respectively have parallelogramshapes.

On a plane, the area of the first opening region OP2 a of the secondopening OEAa2 may be larger than the area of each of the first openingregion OP1 a of the first opening OEAa1 and the first opening region OP3a of the third opening OEAa3. The area of the second opening region OP2b of the second opening OEAa2 may be larger than the area of each of thesecond opening region OP1 b of the first opening OEAa1 and the secondopening region OP3 b of the third opening OEAa3.

According to some example embodiments of the inventive concept, comparedto the first to third openings provided in the rectangular shapes havingthe same area in the typical art, each of the first opening OEAa1 andthe third opening OEAa3 according to some example embodiments of theinventive concept may be provided in shapes in which at least oneopening region is more adjacent to the through hole CHL. Consequently,the area of the light-shielding layer BM defined between the twoopenings, that is, the third opening OEAa3 and the fourth opening OEAb1,which are illustrated in FIG. 5 may be reduced.

Through the partial cross-sectional view shown in FIG. 7, the third subpixel PXa3 of the first pixel PXa and the first sub pixel PXb1 of thesecond pixel PXb are illustrated. The third sub pixel PXa3 includes thethird light-emitting region EAa3 and the third opening OEAa3, and thefirst sub pixel PXb1 includes the first light-emitting region EAb1 andthe fourth opening OEAb1.

The third sub pixel PXa3 is electrically connected to a first electrodeAEa, a second electrode CEa, a first organic light-emitting element EDa,and a first transistor Ta. The first sub pixel PXb1 is electricallyconnected to a first electrode AEb, a second electrode CEb, a firstorganic light-emitting element EDb, and a second transistor Tb.

The first transistor Ta includes a first semiconductor pattern OSP1a, afirst control electrode GEa, a first input electrode DEa, and a firstoutput electrode SEa. The second transistor Tb includes a secondsemiconductor pattern OSP1b, a second control electrode GEb, a secondinput electrode DEb, and a second output electrode SEb. The firsttransistor Ta and the second transistor Tb may be provided insubstantially the same structure as the second transistor T2 illustratedin FIG. 4C.

According to some example embodiments of the inventive concept, thecircuit element layer DP-CL illustrated in FIG. 7 further includes adummy transistor Td.

The dummy transistor Td includes a dummy semiconductor pattern OSP1d, adummy control electrode GEd, a dummy input electrode DEd, and a dummyoutput electrode SEd. For example, the second electrode CE may beconnected to the output electrode SEd of the dummy transistor Td via thethrough hole CHL.

The dummy transistor Td may be electrically separated from the firsttransistor Ta and the second transistor Tb. That is, the dummytransistor Td may be a feature for lowering the level of the resistanceof the second electrode CE.

FIG. 8A is a plan view of pixels according to some example embodimentsof the inventive concept. FIG. 8B is a plan view of pixels according tosome example embodiments of the inventive concept. FIG. 8C is a planview of pixels according to some example embodiments of the inventiveconcept.

A first pixel and a second pixel illustrated in each of FIGS. 8A to 8Chas a structure in which only the shapes of the openings and thestructure of the through hole are changed in the structures of the firstpixel PXa and the second pixel PXb, and the remaining portions of thestructures may substantially be the same. Accordingly, for theconvenience of description, descriptions on the remaining portions willbe omitted.

Referring to FIG. 8A, two through holes, that is, a first through holeCHL1 and a second through hole CHL2 are provided. Each of the firstthrough hole CHL1 and the second through hole CHL2 may pass through aportion of a display element layer OP-OLED and a circuit element layerDP-CL which are illustrated in FIG. 7. In this case, a second electrodeCE is electrically connected to a first dummy transistor through thefirst through hole CHL1, and connected to a second dummy transistorthrough a\the second through hole CHL2. According to some exampleembodiments, the first dummy transistor and the second dummy transistormay be included in the circuit element layer DP-CL.

According to some example embodiments of the inventive concept, on aplane. a second opening OEA2 is line symmetrical according to a centralaxis AX, and may be provided with a first opening region and a secondopening region which respectively have equilateral trapezoidal shapes.Each of the first opening OEA1 and a third opening OEA3 is linesymmetrical the central axis, and may be provided with a first openingregion and a second opening region which respectively have parallelogramshapes.

For example, the parallelogram shape of the first opening OEA1illustrated in FIG. 8A may be line symmetrical to the parallelogramshape of the first opening OEAa1 illustrated in FIG. 6. In addition, theparallelogram shape of the third opening OEA3 illustrated in FIG. 8A maybe line symmetrical to the parallelogram shape of the third openingOEAa3 illustrated in FIG. 6.

The shapes of the fourth opening OEA4, the fifth opening OEAS, and thesixth opening OEA6 may respectively correspond to the shapes of thefirst opening OEA1 and the second opening OEA2, and the third openingOEA3.

Referring to FIG. 8B, a single through hole CHL is provided between afirst pixel PX1 a and a second pixel PX2a. A second opening OEA2 a maybe provided in a rectangular shape. Each of a first opening OEA1 a and athird opening OEA3 a is line symmetrical with respect to a central axisAX, and may be provided with a first opening region and a second openingregion which respectively have trapezoidal shapes. The first openingOEA1 a and the third opening OEA3 a may be line symmetrical to eachother.

The shapes of the fourth opening OEA4 a, the fifth opening OEA5 a, andthe sixth opening OEA6 a may respectively correspond to the shapes ofthe first opening OEA1 a and the second opening OEA2 a, and the thirdopening OEA3 a.

Meanwhile, according to the embodiments illustrated in FIGS. 8A and 8B,on a plane, the area of the second opening may be larger than the areaof each of the first opening and the third opening.

Referring to FIG. 8C, on a plane, a second opening OEA2 b may beprovided in a rectangular shape. For example, the area of the secondopening OEA2 b may be smaller than the area of each of the first openingoEA1 b and the third opening OEA3 b. The first opening OEA1 b and thethird opening OEA3 b may be line symmetrical to each other.

In addition, on a plane, each of the first opening OEA1 b and the thirdopening OEA3 b is line symmetrical with respect to a central axis AX,and may be provided with a first opening region and a second openingregion which respectively have trapezoidal shapes.

FIG. 9 is a plan view illustrating structures of light-emitting regionsincluded in pixels according to some example embodiments of theinventive concept. FIG. 10 is a plan view illustrating structures oflight-emitting regions included in pixels according to some exampleembodiments of the inventive concept. FIG. 11 is a plan viewillustrating structures of light-emitting regions included in pixelsaccording to some example embodiments of the inventive concept.

Referring to FIG. 9, a plurality of light-emitting groups each of whichincludes a plurality of sub light-emitting regions are illustrated. Thesub light-lighting regions may respectively be included in each of theplurality of sub pixels.

First and second light-emitting groups are arranged along a first row.On a plane, the first and second light-emitting groups may be spacedapart from each other with a through hole CHL therebetween. The firstlight-emitting group includes first to third sub light-emitting regionsEA11, EA12, and EA13. The first sub light-emitting region EA11 may beincluded in a sub pixel connected to a first scan line SL1 and a firstdata line DL1. The second sub light-emitting region EA12 may be includedin a sub pixel connected to the first scan line SL1 and a second dataline DL2. The third sub light-emitting region EA13 may be included in asub pixel connected to the first scan line SL1 and a third data lineDL3.

The second light-emitting group includes fourth to sixth sublight-emitting regions EA14, EA15, and EA16. The fourth sublight-emitting region EA14 may be included in a sub pixel connected tothe first scan line SL1 and a fourth data line DL4. The fifth sublight-emitting region EA15 may be included in a sub pixel connected to afirst scan line SL1 and a fifth data line DLS. The sixth sublight-emitting region EA16 may be included in a sub pixel connected to afirst scan line SL1 and a sixth data line DL6.

Similarly, third and fourth light-emitting groups may be arranged alonga second row, and fifth and sixth light-emitting groups may be arrangedalong a third row.

The light-emitting groups EA21, EA22, EA23, EA24, EA25, and EA26 whichare included in the third and fourth light-emitting groups may beincluded in sub pixels connected to a second scan line SL2 and the firstto sixth data lines DL1 to DL6. On a plane, the third and fourthlight-emitting groups may be spaced apart from each other with a throughhole CHL therebetween.

The light-emitting groups EA31, EA32, EA33, EA34, EA35, and EA36 whichare included in the fifth and sixth light-emitting groups may beincluded in sub pixels connected to a third scan line SL3 and the firstto sixth data lines DL1 to DL6. On a plane, the fifth and sixthlight-emitting groups may be spaced apart from each other with a throughhole CHL therebetween.

The through holes CHL may correspond to the through holes CHL describedwith reference to FIG. 5. That is, each of the through holes CHL maypass through a portion of the display element layer OP-OLED and thecircuit element layer DP-CL.

Meanwhile, when external light is incident through the through holes,light leaks may occur on the basis of the color output from thelight-emitting regions in the vicinity of the through holes CHL.

According to some example embodiments of the inventive concept, thethird sub light-emitting region EA13 of the first light-emitting groupwhich is most adjacent to the second light-emitting group emits light ofa first color B, and the fourth sub light-emitting region EA14 of thesecond light-emitting group which is most adjacent to the firstlight-emitting group emits light of a second color R.

In addition, the third sub light-emitting region EA23 of the thirdlight-emitting group which is most adjacent to the fourth light-emittinggroup emits light of a third color G, and the fourth sub light-emittingregion EA24 of the fourth light-emitting group which is most adjacent tothe third light-emitting group emits light of the first color B.

In addition, the third sub light-emitting region EA33 of the fifthlight-emitting group which is most adjacent to the sixth light-emittinggroup emits light of the second color R, and the fourth sublight-emitting region EA34 of the sixth light-emitting group which ismost adjacent to the fifth light-emitting group emits light of the thirdcolor G.

According to some example embodiments, the first color B may be blue,the second color R may be red, and the third color G may be green.Consequently, the light emitted from the light-emitting regions adjacentto the through holes CHL may be output as combinations of first to thirdcolors. As a result, a light leak phenomenon in which light of aspecific color leaks may be reduced.

Meanwhile, FIG. 9 illustrates an example of the first to sixthlight-emitting groups, but the embodiments of the inventive concept arenot limited thereto. That is, two light-emitting groups arranged in thesame rows which are illustrated in FIG. 9 may repeatedly be arrangedalong the first direction DR1, and three light-emitting groups arrangedin the same row may repeatedly be arranged in the second direction DR2.

Referring to FIG. 10, seventh to eighth light-emitting groups arefurther arranged along a fourth row. The light-emitting groups EA41,EA42, EA43, EA44, EA45, and EA46 which are included in the seventh andeighth light-emitting groups may be included in sub pixels connected toa fourth scan line SL4 and the first to sixth data lines DL1 to DL6. Ona plane, the seventh and eighth light-emitting groups may be spacedapart from each other with a through hole CHL therebetween.

As illustrated in FIG. 10, two light-emitting groups arranged in thesame row may repeatedly be arranged along the first direction DR1, andtwo light-emitting groups arranged in the same row may repeatedly bearranged in the second direction DR2.

The third sub light-emitting region EA13 of the first light-emittinggroup which is most adjacent to the second light-emitting group emitslight of the third color G, and the fourth sub light-emitting regionEA14 of the second light-emitting group which is most adjacent to thefirst light-emitting group emits light of the second color R.

In addition, the third sub light-emitting region EA23 of the thirdlight-emitting group which is most adjacent to the fourth light-emittinggroup emits light of the second color R, and the fourth sublight-emitting region EA24 of the fourth light-emitting group which ismost adjacent to the third light-emitting group emits light of the thirdcolor G.

In addition, the third sub light-emitting region EA33 of the fifthlight-emitting group which is most adjacent to the sixth light-emittinggroup emits light of the third color G, and the fourth sublight-emitting region EA34 of the sixth light-emitting group which ismost adjacent to the fifth light-emitting group emits light of thesecond color R.

In addition, the third sub light-emitting region EA43 of the seventhlight-emitting group which is most adjacent to the eighth light-emittinggroup emits light of the second color R, and the fourth sublight-emitting region EA44 of the eighth light-emitting group which ismost adjacent to the seventh light-emitting group emits light of thethird color G.

According to the above description, the light emitted from thelight-emitting regions adjacent to the through holes CHL may be outputas combinations of second and third colors. For example, the combinationof the second and third colors may be provided as a yellow color.Similarly, a light leak phenomenon, in which light of a specific colorsuch as blue or red leaks, may be reduced.

Referring to FIG. 11, the light-emitting groups illustrated in FIG. 11may be provided in substantially the same structure as thelight-emitting groups illustrated in FIG. 9. That is, in FIG. 11, onlythe configuration of the through holes CHL is changed, and thestructures of the remaining portions may substantially be the same.

As illustrated in FIG. 11, the through holes CHL may respectively beprovided between first and second light-emitting groups in a first rowand between fifth and sixth light-emitting groups in a third row. Inthis case, the through holes CHL may not be provided between third andfourth light-emitting groups in a second row.

As described above, the structure in which the through holes areprovided between two light-emitting groups adjacent to each other may bevariously modified.

According to embodiments of the inventive concept, the shapes ofopenings located on a second base layer are different from each other,so that the overall opening ratio of a display device may be improved.Consequently, the overall visibility of the display device may beimproved.

So far, embodiments have been disclosed in the drawings andspecification. While specific terms have been used, they are not used tolimit the meaning or the scope of the present invention described inclaims and their equivalents, but merely used to explain the presentinvention. Therefore, those skilled in the art could understand thatvarious modifications and equivalent examples can be made therefrom.Thus, the real protective scope of the present invention shall bedetermined by the technical scope of the accompanying claims and theirequivalents.

What is claimed is:
 1. A display device comprising: a first base layer;a circuit element layer on the first base layer; a pixel definitionlayer on the circuit element layer and comprising a plurality oflight-emitting openings which are spaced apart from each other anddefine a plurality of light-emitting regions; a second base layer spacedapart from and facing the first base layer; and a light-shielding layeron the second base layer and comprising a plurality of openingsrespectively overlapping the light-emitting regions, wherein on a planeof the first base layer, shapes of first to third openings along onedirection among the openings are different from each other.
 2. Thedisplay device of claim 1, wherein on the plane, an area of each of thelight-emitting regions is smaller than an area of any one among theopenings.
 3. The display device of claim 1, wherein the second openingis between the first opening and the third opening, and on the plane, anarea of the second opening is larger than an area of each of the firstopening and the third opening.
 4. The display device of claim 3, whereinon the plane, the second opening has a first opening region and a secondopening region which are symmetrical across a central axis andrespectively have equilateral trapezoidal shapes, and each of the firstopening and the third opening have a third opening region and a fourthopening region which are symmetrical across to a central axis andrespectively have equilateral trapezoidal shapes.
 5. The display deviceof claim 3, wherein on the plane, the second opening has an openingregion having a rectangular shape, and each of the first opening and thethird opening have a first opening region and a second opening regionwhich are symmetrical across central axes and respectively havetrapezoidal shapes.
 6. The display device of claim 3, wherein on theplane, the first opening and the third opening are symmetrical to eachother.
 7. The display device of claim 1, wherein the second opening isbetween the first opening and the third opening, and the first openingand the third opening are symmetrical to each other, and on the plane,an area of the second opening is smaller than an area of each of thefirst opening and the third opening.
 8. The display device of claim 7,wherein on the plane, the second opening has an opening region having arectangular shape, and each of the first opening and the third openinghave a first opening region and a second opening region which aresymmetrical across central axes and respectively have trapezoidalshapes.
 9. The display device of claim 1, wherein the pixel definitionlayer further comprises a through hole overlapping between the first tothird openings and fourth to sixth openings continuing in the onedirection among the plurality of openings.
 10. The display device ofclaim 9, further comprising, a plurality of first electrodes on thecircuit element layer and respectively having portions exposed by thelight-emitting openings; a light-emitting layer on the first electrodes;and a second electrode on the pixel definition layer and covering thelight-emitting layer, wherein the second electrode is electricallyconnected to the circuit element layer via the through hole overlappingthe light-shielding layer.
 11. The display device of claim 9, furthercomprising, a plurality of first electrodes on the circuit element layerand respectively having portions exposed by the light-emitting openings;a light-emitting layer on the first electrodes; and a second electrodeon the pixel definition layer and covering the light-emitting layer,wherein the circuit element layer comprises: a plurality of transistorson the first base layer and electrically connected to the light-emittinglayer; and a dummy transistor on the first base layer and electricallyconnected to the second electrode via the through hole.
 12. The displaydevice of claim 9, wherein shapes of the first to third openingsrespectively correspond to shapes of the fourth to sixth openings.